Clasp-plate



(No Model.)

A. R. DICKINSON.

CLASP PLATE.

No. 403,580; Patented May 21, 1889.

UNITED STATES PATENT OFFICE.

AUSTIN R. DICKINSON, OF SYRACUSE, NElV YORK.

CLASP- PLATE.

SPECIFICATION forming part of Letters Patent No. 403,580, dated May 21,1889. Application filed February 23, 1889. Serial No. 300,831. (Nomodel.)

To all whom, it may concern.-

Be it known that I, AUSTIN R. DICKINSON, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Clasp-Plates, of which the following, taken inconnection with the accompanying drawings, is a full, clear, and exactdescription.

This invention relates chiefly to clasps or buckles applied to arcticovershoes, rubber coats, and analogous articles; and the inventionconsists in the improved construction of a traiisversely-slottedcatch-plate, with which the tongue of the clasp interlocks, saidimproved catch-plate being formed of a metal blank rolled with solidlongitudinal marginal portions of greater thickness than thelongitudinal central portion, as hereinafter more fully described, andspecifically set forth in the claim.

In the annexed drawings, Figure 1 is a perspective view of the bar ofmetal from which the blank is formed. Fig. 2 is a perspective view ofthe blank. Fig. shows the blank provided with the requisite transverseslots, and 4: shows the catch-plate in its complete shape.

In the manufacture of my improved claspplate I first form a blank( shownin Fig. 2 of the drawings) by passing between suitable shaping-rolls abar of metal (usually steel) of a shape similar to that shown in Fig. 1of the drawings. By the process of rolling said bar I compress thelongitudinal central portion, a, to its desired thickness, and at thesame time increase the thickness of the metal along the longitudinalmarginal portions 1) Z) thereof, so as to form solid and comparativelybroad ribs thereon, as shown in Fig. 2 of the drawings. By thusfabricating the plate so as to displace the metal throughout thelongitudinal central portion of the plate and forcing the metal towardthe side edges the blank is not weakened, as it is where the edges ofthe blank are turned up to form the side edges of the plate. In thecentral portion, a, of the said blank I cut the transverse slots 0 c c,by means of a suitable press and dies, and then arch the plate, eitherby subjecting it to the pressure of curved dies or passing it betweenrolls. A catch-plate thus formed can be made at one operation, possessesgreater stability, is more durable, more compact, neater in appearancethan other plates of this class hitherto put on the market, and is alsodevoid of the sharp edges which are presented on other plates of thisclass when formed with flanges turned up from thin sheet metal, as hasbeen done prior to my invention.

\Vhat I claim as new is- As an improved article of manufacture, atransversely-slotted clasp-plate formed of a metal blank with solidlongitudinal 'rolled marginal portions of greater thickness of metalthan the longitudinal central portion, as set forth.

In testimony whereof I have hereunto signed my name this 19th day ofFebruary, 1889.

AUSTIN R. DICKINSON. [L. 8.]

Witnesses:

C. H. DUELL, MARK W. DEWEY.

